Electron collisions with tetrafluoroethylene (C{sub 2}F{sub 4}) and ethylene (C{sub 2}H{sub 4}) molecules
- Atomic Physics Division, Department of Atomic Physics and Luminescence, Faculty of Applied Physics and Mathematics, Gdansk University of Technology, ul. Gabriela Narutowicza 11/12, 80-952 Gdansk, (Poland)
Absolute total cross sections (TCSs) for 0.6-370 eV electrons scattered by tetrafluoroethylene (C{sub 2}F{sub 4}) molecules have been measured using a linear transmission method. The TCS energy function for C{sub 2}F{sub 4} shows one very broad enhancement with the maximum value of 30x10{sup -20} m{sup 2} located around 30 eV. On the low-energy slope of the TCS curve some weak features near 2.8, 9.5, and 16 eV are discernible. Above 50 eV the present TCS agrees well with theoretical predictions. Absolute TCS for ethylene (C{sub 2}H{sub 4}) has also been measured and compared with the TCS for C{sub 2}F{sub 4}. Effect of substitution of fluorine atoms for hydrogen (perfluorination effect) was indicated and discussed. The reported TCS for C{sub 2}H{sub 4} is distinctly higher than experimental data existing so far.
- OSTI ID:
- 20640189
- Journal Information:
- Physical Review. A, Journal Name: Physical Review. A Journal Issue: 3 Vol. 68; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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